Remote Automation Solutions Guide: OpenEnterprise OPC Server Reference Guide Manuals & Guides
Reference Guide
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OpenEnterprise OPC Server Reference
Guide (V2.83)
Remote Automation Solutions
Website: www.EmersonProcess.com/Remote
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Contents
1 OpenEnterprise OPC Server...................................................................................................1
1.1 Client-Server Application Architecture ................................................................................1
1.2 Pre-Starting Server Components........................................................................................1
1.3 AutoTerminating OPC and HDA Servers............................................................................1
1.4 Maximum Update Rate .......................................................................................................2
1.5 Designating and Defining Tag Timestamps........................................................................2
2 Main Dialog...............................................................................................................................3
2.1 Database List ...................................................................................................................... 3
2.2 Database Diagnostics Button..............................................................................................3
2.3 Status Section.....................................................................................................................4
2.3.1 Start Time.....................................................................................................................4
2.3.2 Server Status................................................................................................................4
2.3.3 Last Update ..................................................................................................................4
2.4 OPC Section .......................................................................................................................4
2.4.1 OPC Server Objects.....................................................................................................4
2.4.2 OPC Group Objects......................................................................................................4
2.4.3 OPC Item Objects.........................................................................................................5
2.4.4 OPC Diagnostics Button...............................................................................................5
2.5 Tags Section .......................................................................................................................5
2.5.1 Number of Tags............................................................................................................5
2.5.2 Tag Browser Button......................................................................................................5
2.6 Main Dialog Menu Bar.........................................................................................................5
2.6.1 File................................................................................................................................5
2.6.2 Edit................................................................................................................................5
2.6.3 View Menu....................................................................................................................6
2.6.3.1 Toggle Toolbar.......................................................................................................6
2.6.3.2 Toggle Status Bar ..................................................................................................6
2.6.4 Help ..............................................................................................................................6
2.6.4.1 Context Sensitive Help...........................................................................................6
2.6.4.2 About Box...............................................................................................................6
3 Query and Transaction Diagnostics......................................................................................7
3.1 Database Name ..................................................................................................................7
3.2 Number of Queries..............................................................................................................8
3.3 Query List............................................................................................................................8
3.4 Table Name.........................................................................................................................8
3.5 Primary Key......................................................................................................................... 8
3.6 Status..................................................................................................................................8
3.7 Status Text..........................................................................................................................8
3.8 Attribute Count ....................................................................................................................8
3.9 Start Time of Query.............................................................................................................8
3.10 Last Update of Query.......................................................................................................8
3.11 Query Details Button........................................................................................................8
3.12 Total Number of Transactions.........................................................................................8
3.13 Number of Failed Transactions .......................................................................................8
3.14 Transaction Log Button....................................................................................................8
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Cancel Button..................................................................................................................9
3.15
3.16 Context Sensitive Help ....................................................................................................9
3.17 Query Attributes...............................................................................................................9
3.17.1 Attributes List.............................................................................................................9
3.17.2 Attribute Name ..........................................................................................................9
3.17.3 Attribute Value...........................................................................................................9
3.17.4 OPC Quality ..............................................................................................................9
3.17.5 NW3000 Signal Quality Attributes...........................................................................10
3.17.6 Cancel Button..........................................................................................................10
3.17.7 Context Sensitive Help............................................................................................10
3.18 Transaction History........................................................................................................10
3.18.1 Number of Transactions..........................................................................................11
3.18.2 Transaction List.......................................................................................................11
3.18.3 Timestamp...............................................................................................................11
3.18.4 Transaction Text .....................................................................................................11
3.18.5 Transaction Status ..................................................................................................11
3.18.6 Transaction Status Text..........................................................................................11
3.18.7 Cancel Button..........................................................................................................11
3.18.8 Context Sensitive Help............................................................................................11
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4 OPC Diagnostics....................................................................................................................12
4.1 Server................................................................................................................................12
4.1.1 OPC Server List..........................................................................................................12
4.1.2 OPC Server Status.....................................................................................................12
4.1.3 Number of OPC Servers.............................................................................................12
4.1.4 OPC Server Object Name..........................................................................................12
4.1.5 OPC Server Creation Time.........................................................................................12
4.1.6 OPC Server Locale.....................................................................................................13
4.1.7 Number of OPC Groups.............................................................................................13
4.1.8 OPC Group Diagnostics Button..................................................................................13
4.1.9 Cancel Button.............................................................................................................13
4.1.10 Context Sensitive Help............................................................................................13
4.2 Group ................................................................................................................................13
4.2.1 OPC Groups...............................................................................................................13
4.2.2 Group Name...............................................................................................................14
4.2.3 Group Active Status....................................................................................................14
4.2.4 Group Enabled ...........................................................................................................14
4.2.5 Group Update Rate ....................................................................................................14
4.2.6 Group Deadband........................................................................................................14
4.2.7 Group Locale..............................................................................................................14
4.2.8 Group Time Bias.........................................................................................................14
4.2.9 Number of Items in Group..........................................................................................14
4.2.10 OPC Item Diagnostics Button .................................................................................14
4.2.11 Cancel Button..........................................................................................................14
4.2.12 Context Sensitive Help............................................................................................14
4.3 Item ...................................................................................................................................14
4.3.1 OPC Group Name......................................................................................................15
4.3.2 OPC Item List .............................................................................................................15
4.3.3 Number of Items.........................................................................................................15
4.3.4 Tag Id..........................................................................................................................15
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Tag Active...................................................................................................................15
4.3.5
4.3.6 Tag Value ...................................................................................................................15
4.3.7 Tag OPC Quality ........................................................................................................15
4.3.8 Requested Type .........................................................................................................16
4.3.9 Canonical Type...........................................................................................................16
4.3.10 Cancel Button..........................................................................................................16
4.3.11 Context Sensitive Help............................................................................................16
5 OPC Tag Browser .................................................................................................................. 16
5.1 Filters.................................................................................................................................16
5.2 String Filter........................................................................................................................17
5.3 Data Type Filter.................................................................................................................17
5.4 Refresh Button ..................................................................................................................17
5.5 Tag Hierarchy Tree ...........................................................................................................17
5.6 Monitor Mode Check.........................................................................................................18
5.7 Tag Browser Attributes List...............................................................................................18
5.8 Cancel Button....................................................................................................................18
5.9 Context Sensitive Help......................................................................................................18
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6 Properties - General Tab....................................................................................................... 19
6.1 Delete Tags.......................................................................................................................19
6.2 Convert Time.....................................................................................................................19
6.3 Use VT_DATE for Timestamps.........................................................................................19
6.4 Use Shortened Tag Label.................................................................................................20
6.4.1.1.1.1 Normal Tag Labels...................................................................................20
6.4.1.1.1.2 Shortened Tag Labels..............................................................................20
6.5 Show Tray Icon .................................................................................................................21
6.6 Show Window ...................................................................................................................21
6.7 Minimized..........................................................................................................................21
6.8 Hide on Minimize...............................................................................................................21
6.9 Synchronous Read Timeout .............................................................................................21
6.10 Synchronous Write Timeout ..........................................................................................22
6.11 Transaction Log Length.................................................................................................22
6.12 OK Button ......................................................................................................................22
6.13 Cancel Button................................................................................................................22
6.14 Context Sensitive Help ..................................................................................................22
7 Properties - Tag Formats Tab...............................................................................................22
7.1 Differences between OPC Tag Formats...........................................................................23
7.1.1 More About OPC ........................................................................................................23
7.1.2 Tag Definitions............................................................................................................24
7.1.2.1 Iconics Tag Definition...........................................................................................24
7.1.2.1.1 Example..........................................................................................................24
7.1.2.2 Bristol OPC Server Tag Definition .......................................................................24
7.1.2.2.1 Example..........................................................................................................24
7.1.3 Tag Differences ..........................................................................................................24
7.1.4 Tag Conversion..........................................................................................................25
7.1.4.1 Note on Acknowledged attribute..........................................................................26
7.1.5 Tag Value Consistency...............................................................................................26
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Allow Tags to be registered in Iconics Format..................................................................27
7.2
7.3 Mimic Iconics Values.........................................................................................................27
7.4 Browse for Iconics Tags....................................................................................................27
8 Properties - Databases Tab...................................................................................................28
8.1 Add Dialog.........................................................................................................................28
8.2 Remove Button .................................................................................................................28
8.3 Pre Connect Databases List .............................................................................................29
8.4 OK Button..........................................................................................................................29
8.5 Cancel Button....................................................................................................................29
8.6 Context Sensitive Help......................................................................................................29
9 Index .......................................................................................................................................30
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1 OpenEnterprise OPC Server
The OpenEnterprise OPC Server, which conforms to the OPC Foundation Data Access Version 1.0A
and V2.05A standards, provides both an asynchronous and synchronous data interface to the
OpenEnterprise Server database.
It is capable of being optimized for the handling of Controlwave device signals, and can be used by
any OPC Client complying with OPC Data Access standards.
It can connect to one or more OpenEnterprise databases to provide data requested by OPC clients.
The Bristol OPC Server user interface also supplies diagnostic information at database, OPC Group
and OPC Item level. Finally, it provides an on board tag browser to allow the user to view and monitor
any valid OPC Tags known to the Bristol OPC Server.
1.1 Client-Server Application Architecture
Most OpenEnterprise View components (e.g. Alarm View, Alarm Printer View, Trend View,
OEGraphics View, Notes View) have what is known as three-tier Client-Server architecture. Each of
the components listed above is a Client, which uses one or more Server components to provide them
with the data that they request. This data is then displayed by the Client to the user. In turn, the
Server component requests the data from what is usually a remote OpenEnterprise data source
(Database Management System) running on an OpenEnterprise server. The Server com ponent, is
therefore a direct client of the OpenEnterprise database, but a Server of the OpenEnterprise View
component (hence the term "three-tier"). Both Client and Server components must run on the same
workstation, but the database usually runs on another machine.
1.2 Pre-Starting Server Components
All Server components are started automatically as a background process when a Client compone nt
starts up. They then close when the Client closes, except for the OPC and HDA Servers, which
remain open by default. However, this can cause problems when Client components are being
opened and closed rapidly. It is therefore recommended that Server components be started before
any Client components begin requesting data from them. Obviously, if a Client component is not
required, then the Server component is not required. The following are the Server components that
should be started on an OpenEnterprise workstation before any of their 'Clients' begin running: -
• The Bristol OPC Server (Clients = OEGraphics and Trend View)
• The Bristol HDA Server (Client = Trend View)
• The Alarm Server (Clients = Alarm View, Alarm Banner)
• The Alarm Printer Server (Client = Alarm Printer View)
• The Notes Server (Client = Notes View)
These components reside in the OpenEnterprise bin directory (by default C:\Program
Files\Bristol\OpenEnterprise\bin). They are executables, and may be started in any of the ways that
an executable file is started (e.g. double clicking, batch file, Startup menu).
1.3 AutoTerminating OPC and HDA Servers
By default, the OPC and HDA Servers remain open when a calling Client closes.
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This behaviour can be changed using the OpenEnterprise Settings Editor. Open the Settings Editor,
and find the OpenEnterprise\Tasks\AlarmPrinterServer key. Then look for a value on this key named
AutoTerminate. If one is not there already, create one, and set the data to 1.
To set the Server back to normal behaviour (i.e. to remain open when the Client closes) set the value
data back to 0 (zero).
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1.4 Maximum Update Rate
It is possible to define a global maximum update rate at which the OPC Server reports changes in
value to a registered OPC Client, regardless of the update rate requested by the client. This
functionality enables the OPC Server to control the frequency with which data is reported to Clients.
The maximum update rate, in milliseconds, can be defined using the Settings Editor. Find the
OpenEnterprise\Tasks\BristolOPCServer, and look for the MaximumUpdateRate value. If the value
does not exist, create it, then set the data to the required value (note the data value represents
milliseconds).
A minimum data value of 50 milliseconds is enforced by the OPC Server.
1.5 Designating and Defining Tag Timestamps
An optional time column can be specified for an OPC Tag, such that the specified time column
attribute value is used to provide the timestamp reported to an OPC Client with any change of value
for the attribute value defined by the OPC Tag. This allows the timestamp associated with any OPC
data sourced from remote telemetry systems to be propagated through OpenEnterprise, and onto
third-party OPC Clients.
To define a time column for use with an OPC tag the following (optional) argument should be added
to the end of an existing OPC Tag definition:-
[."timecolumn:<columnname>"]
where <columnname> is the name of a datetime column within the source table defined by the OPC
Tag.
For instance the following OPC Tag,
"rtrdb1"."nw3000realanalog"."name:varchar:X386:ANA.TPL.001"."value:float"."
timecolumn:alarmtimestamp"
would indicate that the current value of the alarmtimestamp attribute value for the
NW3000RealAnalog signal named X386:ANA.TPL.001 would be supplied whenever the value of that
signal changed and was reported to the OPC Client.
Note: No validation of the defined timecolumn will be made by the OPC Server. If an invalid column is
defined, i.e. a non DATETIME column, or the column name doesn't exist for the associated table, then
the timestamp associated with the OPC Tag cannot be trusted and it is also possible that data may
not be returned for the OPC Tag itself.
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2 Main Dialog
The Bristol OPC Server Main Dialog provides diagnostic information on database connectio ns, OPC
objects and tags retrieved, as well as providing the ability to configure the Bristol OPC Server.
2.1 Database List
The Database List provides information concerning the OPC Server's connection with the configured
OE database(s).
2.2 Database Diagnostics Button
This button becomes enabled when a database is selected from the Database L i st.
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When the button is selected, it opens the Query and Transaction Diagnostics dialog.
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2.3 Status Section
This section provides general health information on the current state of the Bristol OPC Server.
2.3.1 Start Time
When the OPC Server was started.
2.3.2 Server Status
The status of the OPC Server.
2.3.3 Last Update
The time at which the last set of data changes were reported to any connected OPC Clients.
2.4 OPC Section
This section displays a count of OPC Server, OPC Group and OPC Item objects, as well as providing
access to a Dialog which allows the user to browse and obtain diagnostic information relating to OPC
Client(s) requests for data.
It is important not to confuse the OPC Server objects described within this section with the physical
OpenEnterprise OPC Server. An OPC Server object is created by an OPC Client to allow it to add
OPC Groups and OPC Items, and therefore request specific tag data. It is perfectly feasible (and
usual) that at any particular time the OpenEnterprise OPC Server may have multiple OPC Server
Objects to manage.
2.4.1 OPC Server Objects
The number of OPC Server objects being managed currently by the OPC Server.
2.4.2 OPC Group Objects
The number of OPC Group objects currently being managed by the OPC Server.
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2.4.3 OPC Item Objects
The number of OPC Item objects currently being managed by the OPC Server.
2.4.4 OPC Diagnostics Button
This button is enabled if the Bristol OPC Server is managing any OPC Server objects. It allows the
user to invoke the OPC Server Diagnostic dialog.
2.5 Tags Section
This section of the Main Dialog provides information on the tags which the OPC Server can make
available to any Clients.
2.5.1 Number of Tags
The total number of tags the OPC Server has knowledge of. This can be due to specific requests for
OPC Items by OPC Clients, or because the OPC Server has pre-queried the list of available NW3000
signals from any connected databases.
2.5.2 Tag Browser Button
Selection of this button invokes the Tag Browser dialog.
2.6 Main Dialog Menu Bar
There are four items on the OPC Server's menu bar:-
2.6.1 File
There is only one option - to Exit from the Bristol OPC Server.
2.6.2 Edit
The Edit Menu gives access to the Properties Dialog for the Bristol OPC Server. The Properties
Dialog enables the user to change the display settings for the OPC Server and to add or remove
Dataservices that the OPC Server will attempt to connect to automatically when it runs.
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The 'Properties' option can be disabled by setting the data on the DISABLEPROPERTIES value to 1
on the OpenEnterprise\Tasks\BristolOPCServer key using the Settings Editor.
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2.6.3 View Menu
The View menu enables the visibility of the Toolbar or Status bar to be toggled.
2.6.3.1 Toggle Toolbar
Whe
n checked, the Toolbar is visible. This is the default behaviour. Clicking on this item when
checked will remove the tick. The Toolbar will then not be visible. Toolbar visibility can be enabled
when this menu item is unchecked by selecting the option again.
2.6.3.2 Toggle Status Bar
n checked, the Status bar is visible. This is the default behaviour. Clicking on this item when
Whe
checked will remove the tick. The Status bar will then not be visible. Status bar visibility can be
enabled when this menu item is unchecked by selecting the option again.
2.6.4 Help
The Help Menu provides access to this Help file and also to the About Box.
2.6.4.1 Context Sensitive Help
Selection of this button o
2.6.4.2 About Box
The About Bo
Contact numbers.
x provides useful information about the product version and build being used, and also
r menu option will open the OPC Server's help file at the appropriate topic.
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3 Query and Transaction Diagnostics
This form is accessed from the Database Diagnostics button at the top of the OPC Server's Main
Dialog. It displays the status of all active queries the OPC Server has started in order to satisfy the
requirements of any OPC Clients.
3.1 Database Name
The name of the database selected from the Main Dialog.
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3.2 Number of Queries
The number of Queries currently made to the selected database.
3.3 Query List
This list displays the list of Queries made to the database.
3.4 Table Name
The name of the table queried.
3.5 Primary Ke y
The Primary Key of the object being queried from the table.
3.6 Status
The status of the query as an integer. 0 (zero) means a successful query. The Status Text column
gives a textual explanation of the Status code.
3.7 Status Text
The status of the query given in textual form.
3.8 Attribute Count
The number of attributes retrieved by each query.
3.9 Start Time of Query
The time when the query was started.
3.10 Last Update of Query
The time at which a change of value for any attributes contained within the query last occurred.
3.11 Query Details Button
This button is enabled if a query is selected from the Query list. It enables the user to invoke the
Query Attributes dialog.
3.12 Total Number of Transactions
The total number of transactions made with the selected database. A transaction is defined as an
insertion, an update or a deletion of an object within the database.
3.13 Number of Failed Transactions
The number of failed transactions.
3.14 Transaction Log Button
Selection of this button will invoke the Transaction History dialog.
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3.15 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
3.16 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
3.17 Query Attributes
This dialog enables the user to further determine any problems with individual querie s. The values
shown are a snapshot taken when the dialog is invoked and are not updated in realtime.
3.17.1 Attributes List
The list of attributes retrieved by the selected query.
3.17.2 Attribute Name
The name of the database attribute.
3.17.3 Attribute Value
The value of the database attribute.
3.17.4 OPC Quality
The OPC Quality of the retrieved data. This may be any of the permitted OPC Data Access quality
values, with additional settings available for NW3000 signal attributes - see the NW3000 Signal
Quality Attributes section for more details.
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3.17.5 NW3000 Signal Quality Attributes
As long as the 'GetAdditionalNW3000Attributes' value of the
OpenEnterprise\Tasks\BristolOPCServer
key in the Settings Editor is set to non-zero, OPC Quality within the Bristol OPC Server is set by the
reading of the Questionable attribute of Network3000 Signals. Below is a table giving the relationship
between these factors and the meaning of each possible value of the Network3000 Questionable bit
expressed in terms of OPC Quality.
Bit Meaning OPC Quality
0 The Signal value is questionable within the RTU. Uncertain, with Sub-status of
Non-Specific.
1 Data Collection Failure, (template collection only). Bad, with a Sub-status of Last
Known Value.
2 RTU is offline. Bad, with a Sub-status of Last
Known Value.
3 Analog Value has been corrected (rdi3000
receives a value that is Not A Number, so marks
the value as Questionable)
4 Bit unused Bad, with a Sub-Status of Out
5 Version mismatch in RTU Bad, with a Sub-Status of Last
Bad, with a Sub-status of NonSpecific.
of Service.
Known Value.
3.17.6 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
3.17.7 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
3.18 Transaction History
This Dialog is accessed from the Transaction Log button of the Query and Transaction Diagnostics
Dialog. It enables the user to determine the cause of any transaction failures.
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3.18.1 Number of Transactions
The maximum number of transactions shown is determined by the value of the TransactionLogLength
value.
This can be found in the Settings Editor under the OpenEnterprise\Tasks\BristolOPCServer key. If
the value is undefined or is negative, then a default of the last 10 transactions will be shown. To
change the default setting, if the value does not exist on the key, create it and set the data to the
required value.
3.18.2 Transaction List
The list of the most recent database transactions.
3.18.3 Timestamp
The time of the transaction / query.
3.18.4 Transaction Text
The actual query sent to the database.
3.18.5 Transaction Status
The status of the transaction, as returned by the database.
3.18.6 Transaction Status Text
The status of the transaction given in textual form.
3.18.7 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
3.18.8 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
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4 OPC Diagnostics
4.1 Server
This form is accessed from the Diagnostics button in the OPC Section of the OPC Server's Main
dialog. The OPC Server Diagnostics Dialog show the list of OPC Server objects being managed by
the OPC Server, and any diagnostic information applicable to those objects.
4.1.1 OPC Server List
The list of OPC Server objects currently being managed by the OPC Server application.
4.1.2 OPC Server Status
The status of the OPC Server application.
4.1.3 Number of OPC Servers
The number of OPC Server objects currently being managed by the OPC Server application.
4.1.4 OPC Server Object Name
The name of the OPC Client that created the OPC Server object, (if supplied). A value of 'Not Defined'
indicates that the OPC Client specified no name when adding the OPC Server object.
4.1.5 OPC Server Creation Time
The time the OPC Server object was created.
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4.1.6 OPC Server Locale
The OPC Client's requested Locale. The default value of 2084 indicates that data should be retuned
using the default system Locale. The formatting of numbers, dates, language or currency depend on
the Locale.
Note: The Locale value is currently ignored by the Bristol OPC Server.
4.1.7 Number of OPC Groups
The number of OPC Groups created by the OPC Server object.
4.1.8 OPC Group Diagnostics Button
This button is enabled if an OPC Server object is selected from the OPC Server list. It enables the
user to invoke the OPC Group Diagnostics dialog.
4.1.9 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
4.1.10 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
4.2 Group
Displays the status and configuration of all OPC Group objects related to a specific OPC Client
request for data (from an OPC Server object).
4.2.1 OPC Groups
The List of OPC Groups being managed by the OPC Server object.
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4.2.2 Group Name
The OPC Group name, if available.
4.2.3 Group Active Status
States whether the OPC Group is currently active.
4.2.4 Group Enabled
The Enabled status of the OPC Group.
4.2.5 Group Update Rate
The rate requested by the OPC Client for updating of OPC Items within the OPC Group (shown in
milliseconds).
4.2.6 Group Deadband
A percentage deadband that can be supplied to allow the Bristol OPC Server to optimize the reporting
of any change in values of analog attributes defined within the OPC Group.
4.2.7 Group Locale
The Locale requested by the OPC Client for the Group. Note that the Group Locale is currently
ignored by the Bristol OPC Server.
4.2.8 Group Time Bias
Gives an indication of the Time Zone in which the data was collected. Defaults to the Time Zone of
the OPC Client.
4.2.9 Number of Items in Group
The number of OPC Items within the Group.
4.2.10 OPC Item Diagnostics Button
This button is enabled if an OPC Group object is selected from the OPC Group list. It enables the
user to invoke the OPC Item Diagnostics dialog.
4.2.11 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
4.2.12 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
4.3 Item
Displays the status and configuration of all OPC Item objects related to a specific OPC Group.
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4.3.1 OPC Group Name
The OPC Group to which the displayed OPC Items belong.
4.3.2 OPC Item List
The list of OPC Items belonging to the selected Group.
4.3.3 Number of Items
The number of OPC Items within the OPC Group.
4.3.4 Tag Id
The OPC tag for the OPC Item. In the form of "<Database name>"."<Table Name>"."<Primary
Key>"."<Attribute:Data Type>".
4.3.5 Tag Active
Indicates whether the Active flag for the OPC Item is set.
4.3.6 Tag Value
The value of the database attribute that the OPC Tag describes.
4.3.7 Tag OPC Quality
The OPC Quality of the retrieved data. This may be any of the permitted OPC Data Access quality
values, with additional settings available for NW3000 signal attributes - see the NW3000 Signal
Quality Attributes topic for more details.
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4.3.8 Requested Type
The data type requested by the OPC Client for the OPC Item.
4.3.9 Canonical Type
This is the data type actually returned by the OPC Server for the OPC Item.
4.3.10 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
4.3.11 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
5 OPC Tag Browser
This form is accessed from the Diagnostics button in the Tags Section of the OPC Server's Main
dialog. The Tag Browser allows the user to navigate the hierarchy of tags known to the OPC Server,
using both String and Data Type filters.
5.1 Filters
There are two types of filters that may be applied to the Tag Hierarchy Tree or the Tag Browser
Attributes pane. They are String filters and Data Type Filters.
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5.2 String Filter
Text Filters allow the user to restrict the number of records returned by the OPC Server when
traversing the Tag Hierarchy.
The filters apply to the current level within the Tag Hierarchy, and therefore at the database level you
might define a filter that restricts the number of databases shown. Similarly at the table level, you
might choose only to view a particular table, or a range of tables.
Filtering functionality allows the use of wildcard characters, character lists, or character ranges, in any
combination, to be defined as a text filter for comparison with the members of the current tag
hierarchy level. The following table shows the characters that can be used within the text filter.
Character Meaning
? Matches any single character.
* Matches zero or more characters.
# Matches any single digit (0-9).
[character list] Matches any single character contained within the character list.
[!character list] Matches any single character not co ntained within the character list.
Separators are not required within the character list.
To match any of the special characters within a character list, i.e. ("[", "?", "#" and "*"), enclose them
in brackets ("[" and "]"). The "]" can't be used within a character list to match itself, but it can be used
outside of a character list as an individual character.
A hyphen "-" can be used to define a range of characters within the character list, (e.g. A-Z, would
return any string containing the uppercase letters in the range A to Z).
5.3 Data Type Filter
The user can specify a data type, which can then be used to filter the available tags, based on
whether the values of those tags could be returned in the requested format.
It is important to realise that this type of filter isn't used to filter tags whose native data type matches
that requested, but instead is used to filter those tags whose value can be returned in the requested
data type.
5.4 Refresh Button
Clicking this button will apply a newly configured filter to the Tag Browser.
5.5 Tag Hierarchy Tree
The Tag Hierarchy Tree can be used to traverse the tag hierarchy. It is populated on the fly, based on
the current selection and any filters that may be defined.
The tree is split into three levels. At level one are the names of the databases for which tags exist. At
the second level are the names of the tables and views. The third and final level shows the primary
key values.
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The labels associated with each level of the hierarchy tree is influenced by Settings Editor key values.
For instance if the ShowAlternativeTableName data on the OpenEnterprise\Tasks\BristolOPCServer
key is set to 1 then all Network3000 signals will be displayed under their node name, and not their
table name. Similarly, the setting of the AbbreviateTagLabels key will dictate whether the full, or
abbreviated primary key definition is displayed.
OPC Serve
5.6 Monitor Mode Check
If checked, the current values of all tags known to the OPC Server, for the selected database object
will be displayed in real-time.
5.7 Tag Browser Attributes List
Whenever a user selects an entry from the third level of the tag hierarchy, (i.e. the primary key level),
the Attribute List control on the right hand side of the dialog will be populated with information on any
attributes for which tags exist for that database object.
The attribute name, the value of the attribute and the OPC Quality for each tag will be displayed.
If Monitor Mode tick box is selected then any attributes being displayed in the Attribute List Control will
be updated in real-time. This will allow the user to determine the values and OPC Quality of those
attributes, without having to first request them through an OPC Client.
The AbbreviateTagLabels value on the OpenEnterprise\Tasks\BristolOPCServer key will determine
whether the full, or abbreviated attribute name will be displayed.
5.8 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
5.9 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
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6 Properties - General Tab
The General Tab of the Property pages is accessed from the Edit menu of the OPC Server's Main
dialog. It enables the user to change many of the OPCServer's settings.
6.1 Delete Tags
Causes the OPC Server to delete tags from the browse structures when the OPC Client removes
those tags.
6.2 Convert Time
Determines whether the OPC Server converts all timestamps to local time prior to sending them to the
OPC Client.
6.3 Use VT_DATE for Timestamps
If the check box is UNticked then date and time data will ALWAYS be returned to the OPC Client as a
string in the format DD-MMM-YYYY HH:MM:SS.mmm e.g.
29-JAN-2003 10:05:01.285
If the check box IS ticked, then the date and time data is returned in VT_DATE form, and the precise
formatting, and how that data is presented to the user is the responsibility of the OPC Client. For
instance an OPC Client may display such data in the format DD/MM/YYYY HH:MM:SS e.g.
29/01/2003 10:05:01
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Other OPC Clients may provide a different format, or allow the user a range of formats in which to
present such data.
OPC Serve
6.4 Use Shortened Tag Label
Checking this box sets the AbbreviateTagLabels value on the
OpenEnterprise\Tasks\BristolOPCServer key to a non-zero value (1). This causes the labels
displayed at the primary key and attribute levels of the browse hierarchy to be abbreviated.
6.4.1.1.1.1 Normal Tag Labels
The Primary Key is displayed along with the primary key name and data type.
1.
(Click to view)
2. Attribute names are displayed along with the datatype,
6.4.1.1.1.2 Shortened Tag Labels
1.
The Primary Key displays the value of the PK only,
(Click to View)
(Click to view)
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2. Attributes are displayed without the data type.
(Click to view)
6.5 Show Tray Icon
Indicates whether an icon is inserted into the system tray when the OPC Server is running.
6.6 Show Window
Used to indicate if the OPC Server is created visible or hidden.
6.7 Minimized
Used in conjunction with the ShowWindow setting to indicate whether the window is created
minimised or normalised.
6.8 Hide on Minimize
Used to indicate that the window should be hidden rather than minimised if the user attempts to
minimise the OPC Server.
6.9 Synchronous Read Timeout
Indicates the timeout, in milliseconds, after which synchronous reads will be aborted
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6.10 Synchronous Write Timeout
Indicates the timeout, in milliseconds, after which synchronous writes will be aborted
6.11 Transaction Log Length
The number of transactions shown in the Transaction List of the Transaction History Dialog is
determined by the data of the TransactionLogLength value on the
OpenEnterprise\Tasks\BristolOPCServer key. If this is undefined or is negative, then a default of the
last 10 transactions will be shown. This value can be changed here.
6.12 OK Button
When selected, any configuration changes made will be saved and the dialog will close. The OPC
Server must be restarted for the changes to take effect.
6.13 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
6.14 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
7 Properties - Tag Formats Tab
This tab enables the user to configure the OpenEnterprise OPC Server so that it reads and writes
tags in the same format as the OpenBSI OPC Server, originally developed for RAS\Bristol devices by
Iconics™. For more information on the differences in tag format between these OPC Servers, see the
"Differences between OPC Tag Formats" section.
It is possible to automatically enable the OpenEnterprise OPC Server to register tags which have the
Bristol BSI OPC Server Program ID without having to change any part of the tags physically by
running the "IconicsOPCServerReplace.cmd" command file. The "Allow tags to be registered in the
Iconics format" option on this tab is enabled by default. For further information see the 'Browsing
Iconics OPC Tags' section in the 'Allow tags to be registered in Iconics Format' topic.
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7.1 Differences between OPC Tag Formats
Although OPC is a standardized protocol, the actual tag format used by OPC Servers can be
different.
Before OpenEnterprise was born, Iconics produced an OPC Server application that served data from
RAS\Bristol devices to their OPC client application, GraphWorX™.
When OpenEnterprise came along, it had its own OPC Server that could serve tags from the
OpenEnterprise datastore to GraphWorX™ displays. This could cause a problem for users upg rading
to OpenEnterprise in that the tag format used by these OPC Servers is different. Many displays may
have already been created.
However, OpenEnterprise has provided a means of adapting GraphWorX™ displays created using
the Iconics OPC Server without the necessity for time consuming modifications. OpenEnterp rise can
be configured to interpret Iconics tags as OpenEnterprisetags, using the options on the Tag Formats
Tab Property page of the OpenEnterprise OPC Server.
7.1.1 More About OPC
OPC (OLE For Process Control) is a program connectivity standard based on an earlier technology
called OLE (Object Linking and Embedding).
OLE is a compound document technology developed by Microsoft™ for embedding chunks of data
from one program to another, so for example part of an Excel™ spreadsheet could be embedded into
a Word™ document.
The OLE concept introduced the idea of a Client application, which was the container object (the
Word document in our example), which requested the embedded data from a Server application (the
program which produced the embedded data - i.e. Excel in our example).
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OLE was extended into the world of Process Control, and the OPC standard (OLE For Process
Control) was developed. OPC allows OPC Client applications to obtain data from Remote Telemetry
Units (RTUs) and Programmable Logic Controllers (PLCs) via an OPC Server.
OPC Servers utilize OPC protocols to 'serve' data to OPC Client applications from a data store that is
created by native Remote Device Interface (RDI) applications. The RDIs obtain data directly from
RTU and PLC devices and place it into a local data store. The OPC Server is then able to connect to
the data store and 'serve' this data to OPC Clients, such as a GraphWorX display.
The data requested by OPC Clients is in the form of 'tags'. Each tag is a coded string that defines a
discreet value from the data store that is accessed by the OPC Server. The tag incorporates the OPC
Server's unique program id and the necessary information that maps the discreet value to a particular
field in the data store.
OPC Serve
7.1.2 Tag Definitions
The tag definitions below highlights the common elements of an OpenEnterprise and an Iconics tag
by using bold styling. The only common element between the tag formats is the [device.signal]
element.
7.1.2.1 Iconics Tag Definition
[ProgramID]\[device:signal]_[attribute]
7.1.2.1.1 Example
The followi
BristolBabcock.OpenBSIOPCServer.1\NORTH:SINE.VALUE.001_Value
7.1.2.2 Bristol OPC Server Tag Definition
[ProgramID]\[dataservice].[table].[device:signal].[attribute]
7.1.2.2.1 Example
The followi
BristolBabcock.BristolOPCServer\"rtrdb1"."nw3000realanalog"."name:varchar:N
ORTH:SINE.VALUE.001"."value:float"
ng example tag represents an analogue signal value in Iconics format:-
ng example tag represents an analogue signal value in Bristol OPC Server format:-
7.1.3 Tag Differences
The Bristol OPC Server and Iconics tags differ in that:-
• The OPC Server program ID differs.
• The OPC tag format differs.
• The definition of several comparable tags is different e.g. alarm acknowledge tags.
• Not all the Iconics tags are available through the Bristol OPC Server . E.g. Comms
The tag name format used by the Iconics OPC Server is different from that used by the Bristol OPC
Server . The Bristol OPC Server can be configured to support the Iconics format. This allows OPC
clients to perform the following actions with the Bristol OPC Server:
• Register tags that are in the Iconics tag format.
• Return certain values in a format that is normally expected by users of the Iconics OPC
Server
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• Browse for tags with the Bristol OPC Server that will be returned in the Iconics tag format.
OPC Serve
7.1.4 Tag Conversion
The following table details how the Iconics ‘attribute’ portion of the tag is converted to an
OpenEnterprise database attribute.
Iconics
attribute
Name * Name Signal name
Value * Value
Quest * Questionable
AI * AlarmInhibit
MI * ManualInhibit
CI * ControlInhibit
Desc * Description
Units A, AA Units
LogTxt L, LA CurrentState
Comm * Status
Alarm AA, LA InAlarm TRUE when in-alarm
HIAlm AA InHighAlarm TRUE when in high alarm
HIAck AA NOT HighAcknowledged For Iconics this is the
HHAlm AA InHighHighAlarm TRUE when in high-high alarm
HHAck AA
LOAlm AA InLowAlarm TRUE when in low alarm
LOAck AA NOT LowAcknowledged For Iconics this is the
LLAlm AA InLowLowAlarm TRUE when in low-low alarm
LLAck AA
NOAck AA, LA NOT Acknowledged For Iconics this is the
Signal
type
OpenEnterprise
attribute
NOT
HighHighAcknowledged
NOT
LowLowAcknowledged
Notes
unacknowledged state of the
alarm condition. For
OpenEnterprise this is the
acknowledged state.
For Iconics this is the
unacknowledged state of the
alarm condition. For
OpenEnterprise this is the
acknowledged state.
unacknowledged state of the
alarm condition. For
OpenEnterprise this is the
acknowledged state.
For Iconics this is the
unacknowledged state of the
alarm condition. For
OpenEnterprise this is the
acknowledged state.
unacknowledged state of the
signal. It will be TRUE if any of the
alarm conditions is currently
unacknowledged.
For OpenEnterprise, this value
always reflects the alarmsummary
acknowledged state and not the
underlying signals acknowledged
state.
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7.1.4.1 Note on Acknowledged attribute
OPC Serve
The value of the Ackno
BSAP remote alarm reports, user acknowledgement through OpenEnterprise and OpenEnterprise
configuration. The net result is the acknowledged bit within the RTU may differ from that within
OpenEnterprise.
The OpenEnterprise acknowledged tag will be FALSE (not acknowledged) following the receipt of a
BSAP remote alarm report for a signal that has gone into alarm. By default, a return-to-normal remote
alarm report will not set the acknowledged tag to FALSE. However, the requirement to acknowledge a
return-to-normal remote alarm report can be enabled.
The OpenEnterprise acknowledged tag will be TRUE (acknowledged) following a user
acknowledgment i.e. manually setting the OPC tag to TRUE.
The Not Acknowledged bit within the RTU will be set following any into-alarm or return-to-normal state
change for the signal.
The following scenarios may result in the OpenEnterprise Acknowledged value showing a different
state from the RTU:
• Following the receipt of a return-to-normal alarm report for an alarm that has been
acknowledged within OpenEnterprise.
• If an in-alarm signal is acknowledged in the RTU via a means other than OpenEnterprise e.g.
DataViews.
In order to support the conversion of Iconics tags, the configuration setting
EnableIconicsTagNameConversion must be enabled. When enabled, the standard Op enEnterprise
tag format will also be supported concurrently i.e. it will be possible for a client to register tags in the
Iconics and the OpenEnterprise format.
wledged attribute within OpenEnterprise is maintained from a combination of
7.1.5 Tag Value Consistency
The actual value returned for corresponding Iconics and ObjectServer tags is not always consistent.
When Iconics tag conversion is enabled, item values for Iconics tags will be returned to the Client
having been automatically converted to the Iconics format.
This means that on a system which has both Iconics and ObjectServer tags registered co ncurrently,
the return values for some tag values may differ e.g. the acknowledged bits.
The following table details the discrepancies and the required value conversion logic.
Iconics
attribute
Name * ObjectServer returns a full unambiguous device specific
Value * Raw
Quest * The Iconics native data type is BOOL. The ObjectServer
AI * Raw
MI * Raw
Signal type Value conversion rule
signal name whilst Iconics returns just the name portion.
The device name portion of the name will be removed
from the returned signal name. Any characters up to and
including the first ‘:’ character will be removed. E.g.
“NORTH:TANK3.LEVEL.” is returned as “TANK3.LEVEL.”
native data type is LONG. A non-zero ObjectServer value
will be returned as TRUE (1, questionable). A value of
zero will be returned as FALSE (0, not questionable).
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CI * Raw
Desc * Raw
Units A, AA Raw
LogTxt L, LA Raw
Comm * The Iconics Help would indicate that a Comm value of
TRUE (On) would indicate a communication error. Errors
such as a timeout of RTU offline will result in a negative
Status value in ObjectServer.
The Comm value is a BOOL and will be linked to the
ObjectServer integer status attribute. A status value
greater than or equal to zero will return FALSE (0) and a
value less than zero will return TRUE (1).
Alarm AA, LA Raw
HIAlm AA Raw
HIAck AA NOT HighAcknowl edged
HHAlm AA Raw
HHAck AA NOT HighHighAcknowledged
LOAlm AA Raw
LOAck AA NOT LowAcknowledged
LLAlm AA Raw
LLAck AA NOT LowLowAcknowledged
NOAck AA, LA NOT Acknowledged
OPC Serve
7.2 Allow Tags to be registered in Iconics Format
This box is ticked by default allowing the OpenEnterprise OPC Server to register tags in Iconics tag
format once certain registry settings have been set using the "IconicsOPCSeverReplace.cmd file.
The value represented by this check box is stored in the OpenEnterprise.ini configuration file under
the Tasks\BristolOPCServer key in the EnableIconicsTagConversion setting. The OpenEnterprise.ini
file can be viewed using the SettingsEditor, but we strongly advise against making configuration
changes using the Settings Editor. All settings should be configured using the component interface, in
this case, the OpenEnterprise OPC Server.
7.3 Mimic Iconics Values
By default this box will be unchecked. If ticked, converted Iconics tags will have their values
converted to the value expected by an Iconics OPC Server user. Note that this only applies to certain
tags - see the Tag Conversion topic for more information.
This value represented by this check box is stored in the OpenEnterprise.ini configuration file under
the Tasks\BristolOPCServer key in the DisableIconicsTagValueConversion setting. The
OpenEnterprise.ini file can be viewed using the SettingsEditor, but we strongly advise against making
configuration changes using the Settings Editor. All settings should be configured using the
component interface, in this case, the OpenEnterprise OPC Server.
7.4 Browse for Iconics Tags
If this box is ticked, the OpenEnterprise OPC Server tag browser interface returns tags in the Iconi cs
OPC Server format. By default, the value will be FALSE and all tags will be returned in
OpenEnterprise OPC Server format.
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The value represented by this check box is stored in the OpenEnterprise.ini configuration file under
the Tasks\BristolOPCServer key in the BrowseIconicsTagFormat setting. The OpenEnterprise.ini file
can be viewed using the SettingsEditor, but we strongly advise against making configuration changes
using the Settings Editor. All settings should be configured using the component interface, in this
case, the OpenEnterprise OPC Server.
OPC Serve
8 Properties - Databases Tab
The Property Tab enables the user to add and remove connectable databases.
8.1 Add Dialog
This Dialog enables the user to specify a new database which the OPCServer will attempt to connect
to on start up.
8.2 Remove Button
Any selected database from the Pre-Connect Databases List will be removed.
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8.3 Pre Connect Databases List
The list of databases to which the OPC Server will automatically connect on start up.
8.4 OK Button
When selected, any configuration changes made will be saved and the dialog will close. The OPC
Server must be restarted for the changes to take effect.
8.5 Cancel Button
Selection of this button will close the dialog. If it is a dialog where configuration changes can be
made, the changes will not be saved.
8.6 Context Sensitive Help
Selection of this button or menu option will open the OPC Server's help file at the appropriate topic.
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9 Index
1
A
About Box......................................................... 11
Add Dialog........................................................ 32
Attribute Count................................................. 13
Attribute Name................................................. 14
Attribute Value.................................................. 14
Attributes List ................................................... 14
C
Canonical Type................................................ 21
Convert Time.................................................... 24
D
Data Type Filter................................................ 22
Database Diagnostics Button............................. 8
Database List..................................................... 8
Database Name............................................... 12
Delete Tags...................................................... 23
F
Failed Transactions.......................................... 13
Number......................................................... 13
Filter ................................................................. 21
String ............................................................ 21
Filters................................................................ 21
G
Group ............................................................... 19
Group Active Status......................................... 18
Group Deadband.............................................. 19
Group Enabled................................................. 18
Group Locale.................................................... 19
Group Name..................................................... 18
Group Time Bias.............................................. 19
Group Update Rate.......................................... 19
H
Help.................................................................. 11
Hide on Minimize.............................................. 26
I
Items........................................................... 19, 20
Number......................................................... 20
L
Last Update.................................................. 9, 13
Query............................................................ 13
OPC Serve
M
Main Dialog.........................................................7
Minimized..........................................................26
Monitor Mode Check.........................................22
N
Notes on OPC Quality.......................................15
Number.....................................10, 13, 16, 17, 20
Failed Transactions.......................................13
Items..............................................................20
OPC Groups..................................................17
Queries..........................................................13
Tags ..............................................................10
Transactions..................................................16
NW3000 Signal Quality.....................................15
O
OPC Diagnostics Button.....................................9
OPC Group Diagnostics ...................................18
OPC Group Name.............................................20
OPC Group Objects............................................9
OPC Groups .....................................................17
Number..........................................................17
OPC Groups List...............................................18
OPC Item Diagnostics.......................................19
OPC Item List....................................................20
OPC Item Objects...............................................9
OPC Quality......................................................14
OPC Section.......................................................9
OPC Server Creation Time...............................17
OPC Server Diagnostics...................................16
OPC Server List................................................17
OPC Server Locale...........................................17
OPC Server Object Name ................................17
OPC Server Objects ...........................................9
OPC Server Status ...........................................17
OPC Servers.....................................................17
Overview.............................................................6
P
Pre Connect Databases List.............................32
Primary Key ......................................................13
Properties Databases Tab................................31
Properties General Tab ....................................23
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Q
Queries............................................................. 13
Number......................................................... 13
Query.......................................................... 12, 13
Last Update.................................................. 13
Start Time..................................................... 13
Query Attributes ............................................... 14
Query List......................................................... 13
R
Refresh Button................................................. 22
Remove Button ................................................ 32
Requested Type............................................... 20
S
Server Status ..................................................... 9
Show Tray Icon................................................ 25
Show Window .................................................. 26
Start Time..................................................... 9, 13
Query............................................................ 13
Status............................................................... 13
Status Section.................................................... 8
Status Text....................................................... 13
String................................................................ 21
Filter.............................................................. 21
Synchronous Read Timeout............................. 26
Synchronous Write Timeout............................. 26
T
Table Name...................................................... 13
Tag Active ........................................................ 20
Tag Browser......................................................21
Tag Browser Attributes List...............................22
Tag Browser Button..........................................10
Tag Hierarchy Tree...........................................22
Tag Id................................................................20
Tag OPC Quality...............................................20
Tag Value..........................................................20
Tags..................................................................10
Number..........................................................10
Timestamp........................................................16
Timestamps ......................................................24
Use VT_DATE...............................................24
Tools.................................................................10
Total Number....................................................13
Transactions..................................................13
Transaction Diagnostics ...................................12
Transaction History...........................................15
Transaction List.................................................16
Transaction Log Length....................................26
Transaction Status............................................16
Transaction Status Text....................................16
Transaction Text...............................................16
Transactions ...............................................13, 16
Number..........................................................16
Total Number.................................................13
U
Use Shortened Tag Label.................................24
Use VT_DATE ..................................................24
Timestamps...................................................24
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DISCLAIMER
Bristol, Inc., Bristol Babcock Ltd, Bristol Canada, BBI SA de CV and the Flow Computer Division , are wholly owned subsidiaries of Emerson Electric Co. doing business
as Remote Automation Solutions (“RAS”), a division of Emerson Process Management. ROC, FloBoss, ROCLINK, Bristol, Bristol Babcock, ControlWave, TeleFlow and
Helicoid are trademarks of RAS. AMS, PlantWeb and the PlantWeb logo are marks of Emerson Electric Co. The Emerson logo is a trademark and service mark of the
Emerson Electric Co. All other marks are property of their respective owners.
The contents of this publication are presented for informational purposes only. While every effort has been made to ensure informational accuracy, they are not to be
construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. RAS reserves the right to
modify or improve the designs or specifications of such products at any time without notice. All sales are governed by RAS’ terms and conditions which are available upon
request. RAS does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and mai nt enance of any RAS
product remains solely with the purchaser and end-user.
Engineered and supported by:
Remote Automation Solutions,
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www.EmersonProcess.com/Remote
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© 2001-2012 Remote Automation Solutions, division of Emerson Process Management. All rights
reserved.
Emerson Process Management
Remote Automation Solutions
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Worcester, WR3 8YB
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